Loom magazine slide and cradle lock



Oct. 21, 1941. J. STUER 2,259,843.

LOOM MAGAZINE SLIDE AND CRADLE LOCK Filed Dec. 6, 1940 FIG. 2.

A IYIZNVENTORQ Patented Oct. 21, 1941 UNITED STATES PATENT OFFICE l 2,259,843 A V I V LOOM MAGAZINE SLIDE CRADLE LOCK 'Joseph Stu'er, Lawrence; Mass.

Application December 6, 194-0, Serial No. 368,837

* 4 Claims.

This invention relates to devices for-lockin the slidingbars or slide barswhich are used in looms having fixed magazines, each with a plurality of guideways each of which guideways carries a stack of bobbins;

At the bottom of each stack is acradle to receive the bobbin at the bottom of that stack and to deliver ,it to givewayswhich hold it in position until the transferring mechanism forces it into a shuttle to replace an empty bobbin.

In some looms, the cradle is of the sliding release type but this invention; applies to the pivoted type of cradle which hasa turning pin which enters a slot in aslide bar by which the cradle isturned to receive and to deliver a bobbin. Such a loom is shown and described in patent to Ryon, No. 1,030,7l8, June 1912, on Weft replenishing loom, where when ,a slide bar is moved up, partially rotating a cradle, it allows a bobbin from one of. the guideways to drop into the cradle. In the Ryon patentthe parts are then an entire stack .offibobbinsgin onejof the guideways all of which rest on the cradle. If it were not so locked, the cradle would be turnedby'the weight and all of the bobbins in'that. guideway would be released as Ryons. cradle pivotland cradle turning pin are. all ,iniline with the turning slot horizontally. e I

The bottom of each slide bar is flattened out andthere isan ,L-shapedcradle turning slot or passage which loosely receives the end of a pin carried. by thejcradle. v Thehorizonta-Larm off each of such slots as are now, used is. at the bottom and the turning pin, extending fromthe cradle in its normal. or dischargeposition, isinthe' vertical arm'. In this position. thereisgeneraHy a .part of thecradle sitea certain slide which it moves up until it is.

locked. The finger ,is 'retracted but" when .the shuttle'with that bobbinreturns the same finger forcibly pushesfthe'slide'down thus partially revolving its cradle and discharging the bobbin.

' .In my 'oo-pending application on Bobbin transfer mechanism for loom .with. stationary magazine, filed June 29,. 1940;. Serial No. 343,230.. I show'a construction inwhich the slide bars are replaced by cradle actuating slides each of which is normallyheld up by a spring so. as to normally retain a cradle in bobbin receiving positionunder each guidewayof a fixed magazine. Each slide has a single. nose whichis operated by a finger on a shaft, the noseand finger beingso positioned that when the finger moves it engages the nose on a slide and moves.both down against the slide spring so as to. release the bobbin. in thecradle, the movement continuing until the finger releases the nose and slide'which together with ,thecradle are then returned to their .usual normal bobbin receiving position] V.

An,objection to this construction is that the slide return spring must ,be strong enough to hold the cradlein receiving position and also the weight of the stackof bobbins inv that guideway. Amore powerful spring might be used or some sort of friction lock might beused but in either. case this would require much more force on the operating finger and on the parts to which it is connected. v

. I have found that by reversing the position of the cradle pin operating slot whereby the horizontal arm is at the top and the cradle, pin passes through the vertical arm, the relation of the parts can be such that the weight of the bobbins cannot possibly turn the cradle and the slide spring can be very light and the force of the slide operating finger can be correspondingly light. This also does away with the spring plunger and looking notches for each slide.

V Asthe turning pin is always in the vertical slot each cradle is normally locked and will support, not only the weight of the bobbins, but will prevent the cradle from turning if the weaver pushesdOWn' too'hard on the top of the stack in placing or positioning the bobbins.

In the drawing Fig. 1 is an elevation of' the principal parts of my device in one position and Fig. 3 shows them in another position. Fig. 2 is an elevation showing .all of the slide bars with three in one position and one in another position.

Fig. 5 is an isometric drawing of the cradle and Fig. 4 is an isometric drawing of the side of the magazine where the slide bars and the operating mechanism are located. v

Fig.16is an isometric view of the other side of sucha magazine.

. Inth crewman represents the frame of a loom; C represents a shuttle box assembly with two cells I and 2 and S is a shuttle while B, B represent bobbins.

M is a magazine which is fixed to and forms part of the frame A and which has four vertical guideways 2I, 22, 23, 24, at the bottom of which is a cradle D each of which, pivoted at 5, 5, to the magazine M, receives and holds the bottom bobbin of a stack. When tipped, a cradle D allows its bobbin to roll or slide down on the giveways 25, 25 into transfer position.

G is what I will call a slide finger shaft. It

may be the sliding shaft of color control and may be caused to rotate as in-said application of mine Serial No. 343,230, or to move up and down as in patent to Ryon to which reference is made.

Associated with each guideway is a I0, 10, attached to the frame, preferably to the magazine, the slide bar guides being of a kind to prevent horizontal but to permit vertical movement of its slide bar. Through the bottom of each slide bar P, there is an inverted L-shaped slot and through or into this slot extends a cradle turning pin 8 carried by a cradle D of well known type. H p

As shown in my application, each slide bar P has a single nose 50 and is held up by aspring 5| and on the shaftG are a plurality of fingers such as 52, which are in such a position and shape that when a finger is moved by shaft G it pushes down on a nose 50 carrying its slide bar P with it and thereby tipping a bobbin B out of the cradle D under that particular runway, whereupon, as the motion 'continues, the finger releases the nose allowing the spring 5I to return the slide bar and the cradle to their normal position. This is a singlemovement as distinguished from a double movement in the Ryon type of loom.

My locking arrangement between each cradle and its slide bar I is useful where there is a loadslide bar P which is vertically slidable in slide bar' guides ed member or actuator such as'O pivoted on a stud such as I4, and spring pressed by a loading spring, I0. Member 0 carries an arm 43 which operates any well known dog and dagger lay operable bobbin transfer mechanism and may also carry cuttingmechanism such as 100. It also carries arm I I which moves rod N carrying pawl 40 which engages ratchet 4! on shaft G thereby turning it and slide bar fingers 52, 52.

As shown in Fig. 1 and of three of the slide bars of Fig. 2, the normal position of each slide bar P is lifted by a spring 5|.

The principle of my lock is that a slide bar can move only in a straight line Y vertically on and the tendency of the stack of bobbins B, B, to

turn the cradle D on its pivots is therefore'completely resisted. "In the locked position, the pin 8 bears against the side of the vertical arm 1 of slotCinabarP.

When a bar P is pushed down by a nose 50,

after taking up the lost motion, pin'8 is engaged by the top of the horizontal arm 6 of 'a slot C and is forced down and sideways thus' forcibly tipping the cradle D. In the bobbin discharge position of the cradle D shown in Fig. 3, the top faces of the bobbin supporting plates 3 and 4 have slipped under the remaining bobbin, which frame plurality of vertical bobbin guideways at the botis now at the bottom of the stack, at about dead center with reference to pivots 5, 5, so that there is practically no lifting, dropping, or disturbing of the rest of the stack. This slipping in under occurs just before the bottom bobbin starts to move out and to be discharged.

In the construction such as shown by the Ryon patent, each slide bar is lifted and locked in position by one movement and later is pulled down and locked in position by another movement, while'in this and in my co-pending application a spring normally holds the slide up with the cradle in bobbin receiving position, as shown in Fig. 1 with the result that each slide spring must keep the weight of an entire stack of bobbins from turning the cradle and allowing the bobbins to choke the giveways.

These devices are connected by another arm I2 and link l5 to latch arm 60 pivoted at 29 and held out of operation by a trigger arm K pivoted at 62, held up by a spring 66 and having a notch, which, when the device is set, holds arm 60 against the action of spring in until it is released as by a finger R or other device operable by and from any well known type of feeler, the whole being substantially similar to what is shown in my pending application, Serial No. 343,230. I

Each cradle D is'turnable' through an arc of approximately to on pivots such as 5, 5, at each end. Each cradle'D also has at one end a bobbin supporting: plate 4 with a bobbin supporting face l3 and a tip holding recess 24 to engage the tip of a bobbin and at the other end a curved bobbin supporting plate 3. These plates 3 and 4 are so made as to support the rest of the stack of bobbins when the bottom bobbin is being discharged as shown in Fig. 3.

Each cradle D also has a finger 9 which cooperates with the bobbin supporting plate 3 to retain a bobbin in position until it is to be released. The cradle D also has'a' turning pin 8, similar to'the one shown inthe Ryon Patent No. 1,030,- 748 and in my pending application, Serial No.

343,230, which enters an L-shaped actuating slot C in the widened and flattened bottom end 80 of a slide bar such as P. I

This actuating slot C has a horizontal arm 6 at the top and a vertical arm -'I while with Ryon, the horizontal arm is at the bottom. The relation of the pivots 5, 5, of each'cradle D and the turning pin 8 is important as that together with the shape of the slot C is the essence of this invention.

With the Ryon construction, while a stack of bobbins rests on a cradle, he must use a notch and plunger or other type of lock which I do not need to support the'weight. For some reason he uses another lock to hold the slide and cradle in the discharge position also. I dispense with this look also.

' I claim:

1. The combination in a loom provided with a including a fixed magazine having a tom of each of which is a partially revoluble cradle 'to receive and discharge a bobbin from a guideway, said cradle being turnable on pivots and having a turning pm; of slide bar guides attached to the frame each of a kind to prevent horizontal but'to permit' vertical movement of a slide bar; such a slide bar associated with each magazine guideway and vertically slidable in the side bar guides, said slide bar at the bottom including an inverted L-shaped slot. which slot has a horizontal arm at the top and a downwardly extending vertical arm, the cradle turning pin normally passing through the vertical slot arm; a spring for each slide bar to keep it normally raised and the cradle turning pin in such a position in engagement with one side of the vertical slot arm and in relation to the cradle pivots that the pin of the cradle cannot move the slide bar and the cradle cannot be turned in the direction of that side wall but can be turned by moving the slide bar When the pin is in either arm of the slot.

2. The combination in a loom having a frame including a magazine having a vertical guideway at the bottom of which is a partially revoluble cradle to receive and discharge a bobbin from the guideway, said cradle being turnable on pivots and having a turning pin; of slide bar guides attached to the frame each of a kind to prevent horizontal but to permit vertical movement of a slide bar; such a slide bar associated with the guideway and vertically slidable in the slide bar guides, said slide bar at the bottom including an inverted L-shaped slot, which slot has a horizontal arm at the top and a vertical arm, the cradle turning pin normally passing through the vertical arm; a spring for the slide bar to keep it normally raised and the cradle turning pin in such a position in the vertical slot arm and resting against a side wall thereof that the cradle cannot turn on its pivots in the direction of that side Wall but can be turned by moving the slide bar when the pin is in either arm of the slot.

3. The combination in a loom having a frame including a magazine having a vertical guideway at the bottom of which is a partially revoluble cradle to receive and discharge a bobbin from the guideway, said cradle being turnable on pivots and having a turning pin; of slide bar guides attached to the frame each of a kind to prevent horizontal but to permit vertical movement of a slide bar; such a slide bar associated with the guideway and vertically slidable in the slide bar guides, said slide bar at the bottom including an inverted L-shaped slot, which slot has a horizontal arm at the top and a vertical arm, the cradle turning pin normally passing through the vertical arm of the slot at a point above the cradle pivots and with the cradle in bobbin receiving position, the turning pin being in engagement with one side wall of the vertical arm of the slot and resting against said side wall so that the cradle cannot turn on its pivots in the direction of that side wall and the cradle and its pin cannot move the slide bar, but can be moved by the downward movement of the slide bar; a spring for the slide bar to keep it normally raised; and means to push down the slide bar against its spring and to release it to allow the spring to return the cradle to receive another bobbin.

4. The combination in a loom having a frame including a magazine having a vertical guideway at the bottom of which is a partially revoluble cradle to receive and discharge a bobbin from the guideway, said cradle being turnable on pivots and having a turning pin; of slide bar guides attached to the frame each of a kind to prevent horizontal but to permit vertical movement of a slide bar, such a slide bar associated with the guideway and vertically slidable in the slide bar guides, said slide bar at the bottom including an inverted L-shaped slot, which slot has a horizontal arm at the top and a vertical arm, the cradle turning pin normally passing through the vertical arm of the slot at a point above the cradle pivots and with the cradle in bobbin receiving position, the turning pin being in engagement with one side wall of the vertical arm of the slot and resting against said side wall so that the cradle cannot turn on its pivots in the direction of that side Wall and the cradle and its pin cannot move the slide bar, but can be moved by the downward movement of the slide bar; and a spring for the slide bar to keep it normally raised.

JOSEPH STUER. 

